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这篇文章主要为大家展示了“python如何检测文件夹变化并拷贝有更新的文件到对应目录”,内容简而易懂,条理清晰,希望能够帮助大家解决疑惑,下面让小编带领大家一起研究并学习一下“python如何检测文件夹变化并拷贝有更新的文件到对应目录”这篇文章吧。
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检测文件夹中最后修改时间变化的文件,并拷贝复制到相应路径下,拷贝目录会自动检测后输出;测试文件夹路径记得修改;
pyinotify.py:
借用window接口,检测脚本所在目录下文件夹变化(更新、删除、添加等),输出日志到桌面上;
# newcopy.py文件 # -*- coding:UTF-8 -*- import os import os.path import sys import time import datetime import stat import difflib import linecache, shutil # 文件全路径和对应最后修改时间写入到out.txt文档中; def add_log(path): with open('out.txt','w') as f: f.close() for root , dirs, files in os.walk(path): for name in files: temp_path = os.path.join(root,name) file_name = temp_path.replace('C:/Users/Enter/Desktop/', '') file_time = os.stat(temp_path).st_mtime with open('out.txt','a') as f: f.write( ','.join( ['%s' % file_name , '%s\n' % file_time] ) ) f.close() # 注意时间格式转换 #file_time = time.localtime(os.stat(root).st_mtime) #file_time=date.strftime('%Y-%m-%d %H:%M:%S') def if_exist(): # 判断文件out.txt是否存在,不存在则创建 filename = 'out.txt' if os.path.exists(filename): message = 'OK, the "%s" file exists.' else: message = "Sorry, I cannot find the '%s' file..and I create it." a = open('out.txt', 'w') a.close() print message % filename # 判断update文件夹是否存在,不存在则创建 files_name='update' if os.path.exists(files_name): message = 'OK, the "%s" file exists.' else: message = "Sorry, I cannot find the '%s' file.and I create it. " os.mkdir('update') print message % files_name # path 待比较的文件夹路径 # 返回生成的txt(包含更新或者添加的文件路径)的路径 def log_compare(path): # 先确保out.txt存在 if_exist() # 获取out.txt文件内容(文件全路径key和最后修改时间value),生成dict txt = open('out.txt', 'r').readlines() myDic = {} for row in txt: (key, value) = row.split(',') myDic[key] = value print myDic # 创建以时间命名的文件和文件夹 setup_filename = str(datetime.datetime.now().strftime('%Y%m%d%H%M%S')) # 获取当前时间 setup_file_path = '%s%s.txt' %('C:/Users/Enter/Desktop/update/' ,setup_filename) # 生成以当前时间命名的.txt文件,准备写入更新日志 setup_file_dir = '%s%s' %('C:/Users/Enter/Desktop/update/' ,setup_filename) # 生成以当前时间命名的.txt文件夹 #判断key,比较value值是否变化 #原始需要有一个out.txt文件,才能比较value确定是否有更新 #运行程序时,重新遍历一遍文件全路径和最后修改时间 for root , dirs, files in os.walk(path): for name in files: temp_path = os.path.join(root,name) file_name = temp_path.replace('C:/Users/Enter/Desktop/', '') time = os.stat(temp_path).st_mtime # 获取最后修改时间 file_time = '%s\n' % time # 加%s\n是为了与out.txt里值完全对应 if myDic.has_key(file_name) == True: if cmp(myDic[file_name], file_time): # myDic[file_name]旧最后修改时间,file_time新最后修改时间 print (file_name,file_time) # 输出有变化的文件名及其对应的最后修改时间 # 输出以文件时间命名的更新日志,生成路径是update下 with open(setup_file_path,'a') as f: # 有更新的文件,写入更新日志 f.write( '%s\n' % file_name ) f.close() else: print "add",file_name with open(setup_file_path,'a') as f: # 新增的文件,写入更新日志 f.write( '%s\n' % file_name ) f.close() # 返回 当前时间,以时间命名的文件夹路径,更新文件路径 return (setup_filename, setup_file_dir, setup_file_path) # 将src目录中的内容拷贝到dest目录 # 如果dest或者其子目录不存在,先创建 # txt_path为更新日志路径,有更新的文件才拷贝 def copy_directory(src, dest, txt_path): if not os.path.exists(txt_path): print "no file update" return # 读更新日志,获取更新文件的全路径 txt = open(txt_path, 'r').readlines() myDic = {} myDic2 = {} for row in txt: myDic[row] = "1" tempArray = os.path.split(row) key = tempArray[0] myDic2[key] = "1" print "myDic2:", myDic2 print "dict:", myDic # 遍历原始文件夹,得到所有文件的全路径 for root, dirs, files in os.walk(src): for name in files: #print "dirs:",dirs fpath = os.path.join(root, name) newroot = root newroot = newroot.replace(src, dest) # 根据文件绝对路径,创建将要拷贝的路径(相对路径),没有则创建 #print newroot rel_dir = root.replace('C:/Users/Enter/Desktop/', '') if not os.path.exists(newroot) and myDic2.has_key(rel_dir): print "rel_dir:" , rel_dir print newroot os.makedirs(newroot) os.chmod(newroot, stat.S_IWRITE) temp = fpath temp = temp.replace(src, dest) rel_path = fpath.replace('C:/Users/Enter/Desktop/', '') # 将绝对路径改为相对路径,便于遍历对比,挑出要拷贝的文件 rel_path += '\n' if myDic.has_key(rel_path) == True: print "real_path:" , rel_path # os.mkdir(rel_path) shutil.copy(fpath, temp) print "copyfile:", fpath def main(): path_dir = 'C:/Users/Enter/Desktop/acd' path_file = 'C:/Users/Enter/Desktop/out.txt' params = log_compare(path_dir) add_log(path_dir) copy_directory(path_dir, params[1], params[2]) if __name__ == '__main__': main()
#pyinotify.py文件 # -*- coding:UTF-8 -*- import os import win32file import win32con # #检测当前目录下所有文件删除、更新、修改等变化。更新日志输出到桌面。2016.5.23 copy ACTIONS = { 1 : "Created", 2 : "Deleted", 3 : "Updated", 4 : "Renamed from something", 5 : "Renamed to something" } # Thanks to Claudio Grondi for the correct set of numbers FILE_LIST_DIRECTORY = 0x0001 path_to_watch = "." hDir = win32file.CreateFile ( path_to_watch, FILE_LIST_DIRECTORY, win32con.FILE_SHARE_READ | win32con.FILE_SHARE_WRITE, None, win32con.OPEN_EXISTING, win32con.FILE_FLAG_BACKUP_SEMANTICS, None ) while 1: # # ReadDirectoryChangesW takes a previously-created # handle to a directory, a buffer size for results, # a flag to indicate whether to watch subtrees and # a filter of what changes to notify. # # NB Tim Juchcinski reports that he needed to up # the buffer size to be sure of picking up all # events when a large number of files were # deleted at once. # results = win32file.ReadDirectoryChangesW ( hDir, 1024, True, win32con.FILE_NOTIFY_CHANGE_FILE_NAME | win32con.FILE_NOTIFY_CHANGE_DIR_NAME | win32con.FILE_NOTIFY_CHANGE_ATTRIBUTES | win32con.FILE_NOTIFY_CHANGE_SIZE | win32con.FILE_NOTIFY_CHANGE_LAST_WRITE | win32con.FILE_NOTIFY_CHANGE_SECURITY, None, None ) #print "results:", results for action, file in results: full_filename = os.path.join (path_to_watch, file) print full_filename, ACTIONS.get (action, "Unknown") with open('C:/Users/Enter/Desktop/fileupdate.txt','a') as f: #str = ','.join( ['%s' % full_filename , '%s\n' % ACTIONS.get (action, "Unknown")] ) #print str f.write( ','.join( ['%s' % full_filename , '%s\n' % ACTIONS.get (action, "Unknown")] ) ) f.close()
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